Re: ALTER TABLE lock downgrades have broken pg_upgrade

On 05/03/2016 01:21 PM, Stephen Frost wrote:
> * Alvaro Herrera (alvherre@2ndquadrant.com) wrote:
>> Tom Lane wrote:
>>
>>> More generally, though, I wonder how we can have some test coverage
>>> on such cases going forward.  Is the patch below too ugly to commit
>>> permanently, and if so, what other idea can you suggest?
>> I suggest a buildfarm animal running a custom buildfarm module that
>> exercises the pg_upgrade test from every supported version to the latest
>> stable and to master -- together with your proposed case that leaves a
>> toastless table around for pg_upgrade to handle.
> That would help greatly with pg_dump test coverage as well..  One of the
> problems of trying to get good LOC coverage of pg_dump is that a *lot*
> of the code is version-specific...
>


I have an module that does it, although it's not really stable enough. 
But it's a big start.
See 
<https://github.com/PGBuildFarm/client-code/blob/master/PGBuild/Modules/TestUpgradeXversion.pm>

cheers

andrew